Function reduce::generate_random_phragmen_assignment

pub(crate) fn generate_random_phragmen_assignment(
    voter_count: usize, 
    target_count: usize, 
    avg_edge_per_voter: usize, 
    edge_per_voter_var: usize, 
    rng: impl RngCore
) -> (Vec<StakedAssignment<u64>>, Vec<u64>)